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ICSE Prelims 2018 : Chemistry (Kimmins High School, Panchgani)

7 pages, 71 questions, 5 questions with responses, 5 total responses,    2    0
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Kimmins High School, Panchgani
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cHEMlsulygrflag.l$_:8.0 Dr"" .-__ SECIGN LlArrEMPr ALL QU QUEST|OJy_ 1 (a)Choose the most appropriate answer. i) Whiir: nroving down in a groitp in the long fornr of periodic table, atonric size of the e:lernorts progressively. ';il rl A. decreases qr,/n.r"ur", C. renrains -, these same D. none of ii) while r-noving from left to right in long of form of the periorlic ta ble, tlie electronegativity: ;k. increases B. decreases C. first decreases then increarses D. does not change iii) Whir:h is not the property of a covalent compound? -E1ruon solr-rbility in watetn conductor of electricity B.Low melting point D. Soft solid, liquid or gas @ cooa iv)which of tlre foliowi,g forn'rs acidic solution in water: ill.'l ,/ _\ t(. crsCr+ $fuuf o+ C. Na.Co, V) Which is a base amongdt the following A. Sodium hydroxide rxide ffil lryclroxicle d D N.l cl ? B.Potassium hydroxide P,^moniurn hydroxide @coppu, vi)Wlrich is incorrect staterncnt regarding electro-refining of coppcr rnetal? 'r(Electrolyte is saturated -copper sulphate solution u.Anode is irnpure copper block ff. f.rcrtrolyte is saturateci copper suipharte solLrtion acidified with sulphuric acirJ. D. cathode is pure copper rocl/lrlate vii)The eletretlts which form anions or covalent cornpouncis orr r:ntering;r chenrical reactior-r with other elements are:

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